/*
* Copyright 2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package samples.powermockito.junit4.verifynomoreinteractions;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.mockito.exceptions.base.MockitoAssertionError;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import samples.expectnew.ExpectNewDemo;
import samples.newmocking.MyClass;
import samples.singleton.StaticHelper;
import samples.singleton.StaticService;
import static org.junit.Assert.*;
import static org.mockito.Mockito.times;
import static org.powermock.api.mockito.PowerMockito.*;
import static org.powermock.api.support.membermodification.MemberMatcher.constructor;
/**
* Test class to demonstrate static mocking with PowerMockito.
*/
@RunWith(PowerMockRunner.class)
@PrepareForTest( { StaticService.class, StaticHelper.class, ExpectNewDemo.class })
public class VerifyNoMoreInteractionsTest {
@Test
public void verifyNoMoreInteractionsForStaticMethodsReturnsSilentlyWhenNoMoreInteractionsTookPlace() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
verifyStatic();
StaticService.say("hello");
verifyNoMoreInteractions(StaticService.class);
}
@Test
public void verifyNoMoreInteractionsOnMethodThrowsAssertionErrorWhenMoreInteractionsTookPlace() throws Exception {
mockStatic(StaticService.class);
assertNull(StaticService.say("hello"));
try {
verifyNoMoreInteractions(StaticService.class);
fail("Should throw exception!");
} catch (MockitoAssertionError e) {
assertTrue(e
.getMessage()
.startsWith(
"\nNo interactions wanted here:\n-> at samples.powermockito.junit4.verifynomoreinteractions.VerifyNoMoreInteractionsTest.verifyNoMoreInteractionsOnMethodThrowsAssertionErrorWhenMoreInteractionsTookPlace(VerifyNoMoreInteractionsTest.java"));
}
}
@Test
public void verifyNoMoreInteractionsOnNewInstancesThrowsAssertionErrorWhenMoreInteractionsTookPlace() throws Exception {
ExpectNewDemo tested = new ExpectNewDemo();
MyClass myClassMock = mock(MyClass.class);
whenNew(MyClass.class).withNoArguments().thenReturn(myClassMock);
tested.simpleMultipleNew();
try {
verifyNoMoreInteractions(MyClass.class);
fail("Should throw exception!");
} catch (MockitoAssertionError e) {
assertTrue(e
.getMessage()
.startsWith(
"\nNo interactions wanted here:\n-> at samples.powermockito.junit4.verifynomoreinteractions.VerifyNoMoreInteractionsTest.verifyNoMoreInteractionsOnNewInstancesThrowsAssertionErrorWhenMoreInteractionsTookPlace(VerifyNoMoreInteractionsTest.java:"));
}
}
@Test
public void verifyNoMoreInteractionsOnNewInstancesWorks() throws Exception {
ExpectNewDemo tested = new ExpectNewDemo();
MyClass myClassMock = mock(MyClass.class);
whenNew(MyClass.class).withNoArguments().thenReturn(myClassMock);
tested.simpleMultipleNew();
verifyNew(MyClass.class, times(3)).withNoArguments();
verifyNoMoreInteractions(MyClass.class);
}
@Test
public void verifyNoMoreInteractionsOnNewInstancesWorksWhenUsingConstructorToExpect() throws Exception {
ExpectNewDemo tested = new ExpectNewDemo();
MyClass myClassMock = mock(MyClass.class);
whenNew(constructor(MyClass.class)).withNoArguments().thenReturn(myClassMock);
tested.simpleMultipleNew();
verifyNew(MyClass.class, times(3)).withNoArguments();
verifyNoMoreInteractions(MyClass.class);
}
@Test
public void verifyNoMoreInteractionsDelegatesToPlainMockitoWhenMockIsNotAPowerMockitoMock() throws Exception {
MyClass myClassMock = Mockito.mock(MyClass.class);
myClassMock.getMessage();
try {
verifyNoMoreInteractions(myClassMock);
fail("Should throw exception!");
} catch (AssertionError e) {
/*
* This string would have been deleted by PowerMockito but should
* exists if delegation took place.
*/
final String expectedTextThatProvesDelegation = "But found this interaction";
assertTrue(e.getMessage().contains(expectedTextThatProvesDelegation));
}
}
}